mudi said
One more question is it legal to use in game screenshots take by myself for the preview purpose? I asked this because many people on youtube are earning alot of money by making gameplay footages.

kaaz said
I want to buy photos from PhotoDune.net for only preview in TF WP themes. Which license is appropriate regular or extended ?

Regular

I don’t think that the regular license will be enough, because even if it is a preview of your art work you use it for commercial purposes, any user can have any image from your preview by saving it.
I guess Envato should give an exact answer to this question, because it is very important for all of us.